package com.imoocdl.controller;

import com.imoocdl.config.ProjectUrl;
import com.imoocdl.enums.ResultEnum;
import com.imoocdl.exception.SellException;
import lombok.extern.slf4j.Slf4j;
import me.chanjar.weixin.common.api.WxConsts;
import me.chanjar.weixin.common.exception.WxErrorException;
import me.chanjar.weixin.mp.api.WxMpService;
import me.chanjar.weixin.mp.api.impl.WxMpServiceImpl;
import me.chanjar.weixin.mp.bean.result.WxMpOAuth2AccessToken;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestParam;
import org.springframework.web.bind.annotation.RestController;

import java.net.URLEncoder;

/**
 * Created by pc on 2018/7/19.
 */
@RestController
@RequestMapping(value = "/wechat")
@Slf4j
public class WechatController {
    @Autowired
    private WxMpService wxMpService;

    @Autowired
    private WxMpService wxOpenService;

    @Autowired
    private ProjectUrl projectUrl;

    /**
     * 从定向到微信授权页面
     * @param returnUrl
     * @return
     */
    @GetMapping("/authorize")
    public String authorize(@RequestParam("returnUrl") String returnUrl){
        //1配置
        //2调用方法

        String url = projectUrl.getWechatMpAuthorize() + "/sell/wechat/userInfo";
       String resuljt =  wxMpService.oauth2buildAuthorizationUrl(url, WxConsts.OAUTH2_SCOPE_USER_INFO , URLEncoder.encode(returnUrl));
        return "redirect:"+resuljt;
    }

    /**
     * 获取用户信息
     * 重定向到 指定url 并携带openid
     * @param code
     * @param returnUrl
     * @return
     */
    @GetMapping("/userInfo")
    public String userInfo(@RequestParam("code") String code,
                         @RequestParam("state") String returnUrl){
        WxMpOAuth2AccessToken wxMpOAuth2AccessToken = new WxMpOAuth2AccessToken();
        try{
            wxMpOAuth2AccessToken =  wxMpService.oauth2getAccessToken(code);
        }catch(WxErrorException e){
            log.error("微信网页授权 {}",e);
            throw new SellException(ResultEnum.WECHAT_MP_ERROR.getCode(),e.getError().getErrorMsg());
        }
        String openid = wxMpOAuth2AccessToken.getOpenId();
        return "redirect:"+returnUrl+"?openid="+openid;
    }
    @GetMapping("/qrAuthorize")
    public String qrAuthorize(@RequestParam("returnUrl") String returnUrl){
        String url = projectUrl.getWechatOpenAuthorize() + "/sell/wechat/qrUserInfo";
        String redirectUrl = wxOpenService.buildQrConnectUrl(url,WxConsts.QRCONNECT_SCOPE_SNSAPI_LOGIN,URLEncoder.encode(returnUrl));
        return "redirect:"+redirectUrl;
    }
    @GetMapping("qrUserInfo")
    public String qrUserInfo(@RequestParam("code") String code,
                             @RequestParam("state") String returnUrl){
        WxMpOAuth2AccessToken wxMpOAuth2AccessToken = new WxMpOAuth2AccessToken();
        try{
            wxMpOAuth2AccessToken =  wxOpenService.oauth2getAccessToken(code);
        }catch(WxErrorException e){
            log.error("微信网页授权 {}",e);
            throw new SellException(ResultEnum.WECHAT_MP_ERROR.getCode(),e.getError().getErrorMsg());
        }
        String openid = wxMpOAuth2AccessToken.getOpenId();
        return "redirect:"+returnUrl+"?openid="+openid;
    }
}

